EP 3885617 A1 20210929 - CHECK VALVE AND VALVE DEVICE HAVING SAME
Title (en)
CHECK VALVE AND VALVE DEVICE HAVING SAME
Title (de)
RÜCKSCHLAGVENTIL UND VENTILVORRICHTUNG DAMIT
Title (fr)
CLAPET ANTI-RETOUR ET DISPOSITIF DE CLAPET LE COMPRENANT
Publication
Application
Priority
- JP 2018216410 A 20181119
- JP 2019042377 W 20191029
Abstract (en)
Provided are a check valve and valve device that can be connected to pipes of various diameters while reducing costs. The check valve 1, which can connect the couplers 7, 8 to fluid pipes T1, T2 has: a check valve main body 2 provided with fluid passages 21 to 25 and a valve seat ST penetrated by the fluid passages; a valve body 3 which can be seated on the valve seat ST; a spring member 5 that biases the valve body 3 toward the valve seat ST; and a support member 4 that supports the spring member 5 with respect to the check valve main body 2, wherein the check valve main body 2 is a single component and has, on an end section of the fluid passage, a connection portion 25 for connecting the coupler 8; the minimum inner diameter ϕ1 of the fluid passages from valve seat ST to the connection portion 25 is larger than the maximum outer diameter ϕ2 of the valve body 3, and the coupler 8 connected to the connection portion 25 is spaced apart from the support member 4 held by the check valve main body 2.
IPC 8 full level
F16K 15/02 (2006.01); F16K 27/02 (2006.01)
CPC (source: EP US)
F16K 15/025 (2013.01 - US); F16K 15/028 (2013.01 - EP); F16K 17/30 (2013.01 - US); F16K 27/0209 (2013.01 - EP US)
Citation (search report)
See references of WO 2020105380A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3885617 A1 20210929; CN 113056629 A 20210629; JP 2020085048 A 20200604; US 2022003328 A1 20220106; WO 2020105380 A1 20200528
DOCDB simple family (application)
EP 19886742 A 20191029; CN 201980075954 A 20191029; JP 2018216410 A 20181119; JP 2019042377 W 20191029; US 201917293786 A 20191029